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granzer

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  1. Hey @PrasannaK. Thank you for the replay. I came to this topic after reading that pdf itself. The document uses the term 'mesh flow' and 'mesh flow line' but it doesn't explain what it means. I have read that maintaining a better mesh flow is required for a good mesh. But what does a better or bad mesh-flow/mesh-flow-line mean?. Ps:Mesh flow doesn't mean the mesh is actually flowing/moving or is dynamic ryt?
  2. Please explain the concept of 'mesh flow' or 'mesh flow line'.
  3. Hey @Adriano A. Koga, thanks fot the quick response. Yes I have already run a DOE and fit study. In the DOE run all the responses where mapped to the correct inlets. Just was wondering if same could be done for the Setup run too as there i an option we can use the matrix of the setup/nominal run for the Fit study (instead of the DOE marix) and currently the Setup run matrix is not filled as it has the 5 inlet velocity but only 1 response/temperature value.
  4. I have inlet velocity as the design variable/parameter and have 5 different values of velocities. I want max surface temperature (of a particular surface) as the response. I am using the Acusolve solver. I used Sweep mode for the Setup run and it ran successfully for the 5 inlet velocities. But output file of which run should I use as response? For Nominal run there is just 1 run at the nominal value and the response is extracted from the output file of this run. But since I have 5 different runs and I want to map the output of each run to the correct inlet velocity. How should I do it? PS: The first velocity has the corresponding surface temperature value tabled. The other 4 velocities are not extracting the respective surface teperatures.
  5. Ok I got it running...but I dont know how to define the response after the nomonal run. Which file should i choose to create the response?
  6. I did try that. I created a 'Parameter' called of type 'Discreet', and gave 5 different velocities. I assigned this parameter to the inlet boundary condition. When I start the hyperstudy from HM(selecting the response as temperature at the required surface) and tried a test run the solver ran till acuprep throws an error. There are no previous errors or warnings. I have attached the log file. Can you please help me with this? PS: I used the tutorial mentioned in this to set up the parameter. Parametric_Study_try.6.Log_acuTail.txt
  7. Hey, that was really insightful. But I want to run just a parametric study and not a parametric optimization study. So will I have to use the "Parameter" in the 'Solver' browser tree of HM, to define the Inlet velocity as the 'Independent' Variable...and if this is the case where will I have to choose the surface-temperature/volumetric-temperature as the dependent/response variable?
  8. Can anyone tell me if this is possible..??
  9. Ok..I was just considering this approach as the 2 shells are different sized squares(say 2*2 and 4*4), but ya since there is no heat transfer form the sides of the shell it has to go form one to the other. Thank you, this has been informative.
  10. I need help setting up this simple case in Acuconsole-Hyperstudy (Surface and volume mesh was constructed in Hypermesh). I have a simple rectangular duct containing a heat generating body in the middle of the duct. I am wondering of its possible to create the 'inlet-velocity' as a 'parameters' and give 5 different inlet velocity for a DOE study in HyperStudy. I want to study the effect of inlet velocity on Volumetric average temperate of the heated body, so I need response as the volumetric-average temperature. Also, can you provide some material to setup a simple DOE study with varying inlet velocity.
  11. Hello, Continuing the discussion from the post: I am wondering of its possible to create 'parameters' in Acuconsole instead of HM. Also, the video mentioned in the post goes up the starting upto Hyperstudy. Is there any material on how to run a DOE study for CFD in Hyperstudy? I
  12. Example can be taken from electronic cooling itself. For example an electronic component might be sitting on a thin square highly conductive plate, and this small plate may itself be resting on a larger thin rectangular plate for heat dissipation. This larger plate is resting on a PCB. So the small square plate and the larger rectangular plate(these two plates would be modeled as 2 separate shell volumes in contact with each other) would be sandwiched between the electronic component volume and the PCB volume.
  13. If there are 2 seperate surface,S1 and S2, attached to 2 different volumes, vol1 and vol2, which are in contact with each other(i.e. the interface between the vol1 and vol2 is made by S1 and S2) and I want to create 2 seperate shell volumes,svol1 and svol2, between these two volumes (ie vol1 and vol2). Can i create svol1 using S1 and svol2 using S2?. Also can I get correct heat transfer between svol1 and svol2?. How will I get the value of heat flux between the two shell volumes ie which surface should I select to measure the heat flux between the 2 shell volumes? PS: I dont want to create just one shell volume and use the layer option.
  14. So this is what I understand from " Then you'll also get a surface set attached to the thermal shells - with both 'sides' in the same set. You'll still be able to use the surfaces attached to the two main volumes for your post-processing needs. " i.e. the surface which are created during creation of (and which are attached to) the shell volume are all under a single named surface, say the name of the surface is "default". If that is true then this " with both 'sides' in the same set. " would mean that if I got the value of the heat flux on this 'default' surface it should be zero, as what ever heat is going into the shell volume should be coming out of it to bring the shell volume to a steady state temperature(and the 'default' surface encloses the shell volume from "all"/both sides. But when I do measure the heat flux on the ';default' surface it is not zero.
  15. OK so so creating separate surafaces(one for PCB and one for Electronic component) in HM OR if only one one common interface surface was created in HM then 'splitting' the 2 surfaces that gets created in acuconsole for the interface (to have separate nodes for each surface) is not required then? It is my understanding that shell elements usually have 2 surface enclosing its o volume, how are they created in acuconsole? I need to understand how the 'default' surfaces created enclose the shell-volume to plot the heat flux going in and out of the volume.
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